Rolling-mill



(No Model.) I 2 Sheets-Sheet 1.

H. AIKEN.

ROLLING MILL.

No. 444,389. Patented Jan. 6, 1891.

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2 SheetsSheet 2. H. AIKEN. ROLLING MILL.

(No Model.)

No. 444,389. Patented Jan. 6, 1891.

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UNITED STATES PATENT OFFICE.

HENRY AIKEN, OF PITTSBURG, PENNSYLVANIA.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 444,389, dated January 6, 1891.

Application filed September 1, 1890. Serial No. 363,653. (No model.)

To all whom, it may concern.

Be it known that I, HENRY AIKEN, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered a certain new and useful Improvement in Rolling- Mills, of which improvement the following is a specification.

The invention described herein relates to certain improvements in rolling-mills,whether the same be two or three high; and the invention has for its object a construction of roll adjusting screws and their operating mechanism, whereby the adjustment of the rolls may be easily and quickly efiected.

In general terms, the invention consists in the construction and combination of mechanical devices or elements, all as more fully hereinafter described and claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is a view in side elevation of a stand of rolls having my improvement applied thereto. Fig. 2 is an end elevation of the same. Fig. 3 is a sectional plan view, the plane of section being indicated by the line 5000, Fig. 2; and Fig. 4is a detail view of a modification of the fluidpressure cylinder.

The rolls 1 are mounted in the usual manner in the housings 2, the journal-boxes 3 of the lower roll resting on the bottom of the windows in said housings, while the journalboxes 4 of the upper roll are supported by rods 5, extending upwardly from the crossheads 6 on the piston-rods of the fluid-pressure cylinders 7. These fluid-pressure cylinders are connected to an accumulator, thereby providing a yielding support for the upper roll. Any other constructions known in the art may be employed for supporting the upper roll in a yielding manner.

Through the portions of the housings above the windows are formed threaded openings for the reception of the screws 8, Whose lower ends bear upon the upper halves of the journal-boxes of the upper roll, as shown in Fig. 2. On the upper ends of the screws 8 are secured the pinions 9 in such manner as to permit the screws to move longitudinally through the pinions while rotating therewith. These pinions intermesh with a gear-wheel 10, arranged between them and keyed to a vertical shaft 11, mounted in suitable hearings in a frame 12, secured to brackets 13, formed on or attached to the inner faces of the housings, as shown in Fig. 1. On the shaft 11 is also keyed a pinion 14, intermeshing with a rack-bar 15, connecting the pistons of the single-acting fluid-pressure cylinders 16. These cylinders, as shown in Figs. 1 and 3, are secured on the housings on opposite sides of the frame 12, so that by admitting fluidpressure into one of these cylinders while the exhaust from the other is opened the rack can be shifted and the screws rotated as desired.

While preferring to employ two single-actin g fluid-pressure cylinders, formed independently of each other, as shown in Fig. 3, with their inner adjacent ends open, and secured to opposite sides of frame 12, as in such construction the amount of packing required is reduced to a minimum, the pistons being the only portions requiring a packing, one double-acting'cylinder may be employed, as shown in Fig. 4. In this construction the cylinders are formed integral with each other, forming a single cylinder, provided about midway of its length with an opening through which the pinion 14 projects, so as to engage the rack-bar, as shown in Fig. 4. This rack is so constructed and provided with suitable packing at its ends as to serve as pistons.

It will be observed that the two single-acting fluid-pressure cylinders shown in Figs. 1, 2, and 3, having their pistons rigidly connected, operate as and formwhat is practically a double-acting cylinder. (Shown in Fig. 4.)

I claim herein as my invention- 1. In a stand of rolls, the combination of a fluid-pressure cylinder securedto the housing of said-rolls, a rack operated by the piston of said cylinder, screws for adjusting the rolls, and gearing interposed between the rack and screws for rotating the latter, substantially as set forth.

In testimony whereof I have hereunto set 2. In a stand of rolls, the combination of my hand.

two single-acting cylinders secured to the housing of said rolls, a rack connecting the pistons of said cylinders, screws for adjust- 5 ing the rolls, and gearing interposed between I \Vit'nesses:

HENRY AIKEN.

the rack and screws for rotating the latter, W. S. THOMAS, substantially as set forth. DARWIN S.-WVOLCOTT. 

